24 February : Daily Current Affairs Quiz

Answer: Option A - Kerala

Explanation:

• Vizhinjam International Seaport is located in Kerala and is being developed as a major logistics and transshipment hub due to its natural depth of 18-20 meters, making it suitable for large vessels.
• It is strategically positioned near international shipping routes, enhancing trade efficiency.
• The port will also have a Special Economic Zone (SEZ) and is set to become a sea-air transshipment hub, linking global trade routes with improved connectivity.

Answer: Option B - Because of their increased surface-to-volume ratio

Explanation:

• Nanomaterials exhibit unique properties due to their increased surface-to-volume ratio, which enhances surface energy, reactivity, and quantum effects.
• This leads to improved mechanical strength, catalytic efficiency, and altered electrical, optical, and magnetic properties compared to bulk materials.
• Their high surface area allows greater interaction with surrounding molecules, making them useful in drug delivery, sensors, and advanced materials.
• These properties are crucial in nanotechnology applications across various fields.

Answer: Option D - Examination of particle interactions in solids and liquids.

Explanation:

• Condensed matter physics studies how particles interact in solids and liquids, focusing on their collective behavior.
• Unlike gases, where interactions are weak, condensed matter deals with strong interactions that lead to properties like superconductivity, magnetism, and semiconductors.
• This field has driven advancements in technology, including modern computing, optical fibers, and new materials.

Answer: Option B - Similar isotopic composition of oxygen in Earth and Moon rocks

Explanation:

• The most compelling evidence of a shared evolutionary history between the Earth and the Moon is their similar isotopic composition of oxygen.
• This supports the giant impact hypothesis, which suggests that the Moon formed from debris after a massive collision between a Mars-sized body and the early Earth.
• Other options, like water molecules, magma, and impact craters, provide valuable insights but are not direct indicators of a common origin.

Answer: Option C - Discovery of active volcanic eruptions on the moon

Explanation:

• Chandrayaan missions have made significant discoveries, including confirming lunar water molecules, detecting hydroxyl molecules, and providing evidence of an underground ocean of molten rock (primordial magma).
• However, there is no evidence of active volcanic eruptions on the moon.
• The moon’s volcanic activity ceased billions of years ago, and its surface has remained geologically inactive.
• Therefore, option (c) is incorrect, as active volcanic eruptions have not been observed.